Six stoke engines (vehicles, convertible, motorcycles, spark plug)

[wickedpuppet]

What do you know bout it? Are they used in any vehicles or off road? It they are, then in what exactly? Do you have any good websites w/ info on them?

[TrapperL]

The 6 stroke engine by Crower uses 2 fuels, gas and water. Think of a normal 4 cycle engine with an additional rotation of the crankshaft so that the spark plug fires every 3 revs instead of ever 2 revs. During the extra rev, water is injected into the combustion chamber and when compressed acta like a fuel to add power and cooling for that stroke. Might research Crowers 6 stroke engine.
Years back during my racing days, Crower had a 5 cycle cam kit for the small block GMs. It also used a 3 rev spark event but the extra cycle was for cooling only, no water was injected. RPMs were high with most turning well over 12,000 RPMs and made tremendous power in a racing environment. It was not practical for street applications as low RPM torque was not there. I've only witnessed one in actual racing as it was not a common thing. Most folks never understood the technology.

[wickedpuppet]

Very interesting. Thanks...also, just to clarify...was is the race car that used 5 stoke? I've heard some people talk bout usage of 6 stoke in motorcycles, was wondering if that'd be possible and if it would have any advantages.

[TrapperL]

was is the race car that used 5 stoke?

Not sure the exact question but the 5 cycle cam that I ran against was in a 56 Chevy convertible with 5.10 gears, 4 speed, and he ran 10" slicks. Carbs were duel 4 barrels. The guys name was Hands and was a very huge man. Anybody from that era in San Antonio would remember him. He was a carb specialist.

I doubt the Crower engine will see much future. The biggest issue is the water. Todays GF5 oils are already taxed with the condensate from the ethanol in our gas. Adding even more water vapors to the combustion chamber will surely result in tremendous sludging. I doubt at current operating temps that the water could be cooked off thru any type of PCV system. Adding additional air flow thru the engine internals to wick it away would mean more heated air going into the induction system which would effect fuel mileage negatively. It's like a lot of the "new" technologies out there, it works but it isn't practical. I think our future is towards the headless engine designs where combustion ratios are in the thousands. As we know in thermal dynamics, the more you compress a fuel the more efficient it is. Research the Dr Paul engine. It's running at 80% efficiency and can run on fuel you can make at home from your bio garbage. But so far, even thought there are certified test units out there, you can't have it and the reason- Washington DC.